HowTo Display Text Files In a Shell Script

I am a new Unix user and learning bash shell scripting. How do I display a text file stored in /tmp directory in a shell script? There are many ways to display a text file in a shell script. You can simply use the cat command and display back output on screen. Another option is to read a text file line by line and display back the output. In some cases you may need to store output to a variable and later display back on screen.